commit 82320e94606cfb0f68c6049c070c3600f8df9081
author Daniel Dunbar <daniel@zuster.org> Thu Feb 12 19:31:53 2009 +0000
committer Daniel Dunbar <daniel@zuster.org> Thu Feb 12 19:31:53 2009 +0000
tree 0be40428c070ed8fb9dfb83f5e894b1037f04ada
parent 4fc526d80d829b2f8c294a4c3360c820f1f6e7c2

Fix assertion when input is an empty string.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64397 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Lex/PTHLexer.cpp

diff --git a/lib/Lex/PTHLexer.cpp b/lib/Lex/PTHLexer.cpp
index 4648ac8..0cd17e7 100644
--- a/lib/Lex/PTHLexer.cpp
+++ b/lib/Lex/PTHLexer.cpp
@@ -721,7 +721,7 @@
 IdentifierInfo* PTHManager::get(const char *NameStart, const char *NameEnd) {
   PTHStringIdLookup& SL = *((PTHStringIdLookup*)StringIdLookup);
   // Double check our assumption that the last character isn't '\0'.
-  assert(NameStart[NameEnd-NameStart-1] != '\0');
+  assert(NameEnd==NameStart || NameStart[NameEnd-NameStart-1] != '\0');
   PTHStringIdLookup::iterator I = SL.find(std::make_pair(NameStart,
                                                          NameEnd - NameStart));
   if (I == SL.end()) // No identifier found?